Entrained bed slag cooling conveyor

Abstract

An entrained bed type slag cooling conveyor includes a shell, a motor drive device, a driving sprocket, a drag shaft installed on the left side of the shell, a driven sprocket, a drag sprocket, a tensioning shaft installed on the right side of the shell, a tensioning sprocket, a plurality of roller guide bearing chains installed on the drag sprocket and the tensioning sprocket and driven by the drag sprocket, a chain guide installed on the shell for guiding the roller guide bearing chains, a slag material conveyor belt installed on the roller guide bearing chains, an air inlet duct, an air inlet control shaft, an air inlet adjustment revolving door, an air inlet control revolving arm, an air flow control shaft, an air flow adjustment revolving door, and an air flow control revolving arm. The present invention has a simple structure, reliable operation, long service life, cooling and conveying, and high-temperature waste heat recovery. It can be widely used in the process of efficient cooling and conveying of high-temperature solids and the recovery of their high-temperature heat, and is particularly used in the process of solid slag treatment and the recovery of its high-temperature waste heat.

Description

Technical Field

[0001] The invention relates to an entrained-bed type steel slag cooling conveyor, which can be widely used in the efficient cooling and conveying of high-temperature solids and the recovery of high-temperature heat, and is particularly applicable to the treatment of solid steel slag and the recovery of high-temperature waste heat. Background Art

[0002] During the steelmaking process of steel mills, 10% to 15% of steel slag is produced for each ton of crude steel produced. In addition to recyclable solid matter, steel slag also contains a large amount of heat. The temperature of molten steel slag is between 1400 and 1750°C, and the specific heat capacity of slag is about 1.25 kJ / (kg˙°C). Calculations show that when steel slag is reduced from 1400°C to 400°C, 1.2×109J of sensible heat can be recovered per ton of molten slag, which is equivalent to the heat generated by the complete combustion of 40kg of standard coal. Existing steel slag processing equipment can only process and recycle solid steel slag, but the large amount of high-temperature waste heat carried by the steel slag cannot be effectively recovered, and is basically all emptied and wasted. Summary of the invention

[0003] The object of the present invention is to provide an entrained flow type slag cooling conveyor with simple structure, reliable operation, long service life, cooling conveying and high-temperature waste heat recovery.

[0004] The fluidized bed type slag cooling conveyor of the present invention comprises a sealed shell with a slag discharge port at the bottom of the left side, a material inlet in the middle, a motor drive device installed on the top surface of the left side of the shell, a driving sprocket installed on the output shaft of the motor drive device, a drag shaft installed on the left side of the shell, a driven sprocket installed on the drag shaft and driving the drag shaft to rotate and driven by the driving sprocket through a chain transmission, a plurality of drag sprockets with double-row teeth installed on the drag shaft and rotating with the drag shaft, a tensioning shaft installed on the right side of the shell, a plurality of tensioning sprockets installed on the tensioning shaft, a plurality of roller guide bearing chains installed on the drag sprocket and the tensioning sprocket and driven by the drag sprocket, and a roller guide bearing chain installed on the shell for rollers A chain guide guided by a guide bearing chain, a slag material conveyor belt which is mounted on a roller guide bearing chain and is composed of a plurality of arranged air plates with oblique air holes which are overlapped and connected in sequence, an air inlet duct which is mounted on one side of the shell along the flow direction of the air inlet, an air inlet control shaft mounted on the air inlet duct, an air inlet adjustment rotating door which is located inside the air inlet duct and is installed on the air inlet control shaft by fastening screws, an air inlet control rotating arm which is installed on the end of the air inlet control shaft, an air flow control shaft which is installed on the air inlet duct, passes through the air inlet duct and extends into the interior of the air chamber, an air flow adjustment rotating door which is located inside the air chamber and installed on the air flow control shaft, and an air flow control rotating arm which is installed on the end of the air flow control shaft.

[0005] The fluidized bed type slag cooling conveyor of the present invention has 2 to 4 roller guide bearing chains, each of which is connected end to end and arranged in two layers in the shell, the upper layer is the conveying course, and the lower layer is the return course.

[0006] The fluidized bed type slag cooling conveyor of the present invention, the roller-guided load-bearing chain comprises a plurality of load-bearing chain links which are provided with male interlocking connecting ends and female interlocking connecting ends and are sequentially connected together through pins, a passive guide wheel which is inserted into the female interlocking connecting ends and mounted on the pins, active rollers which are located on both sides of the load-bearing chain links and mounted on the pins, and retaining rings which are located on both sides of the active rollers and mounted on the pins through bayonet pins.

[0007] The entrained-bed type steel slag cooling conveyor of the present invention further comprises a slag discharge pipe installed on the other side of the shell body, and a normally closed slag discharge control door installed on the slag discharge pipe.

[0008] The working principle of the fluidized bed type steel slag cooling conveyor of the present invention is as follows: controllable air inlet chambers which can adjust the inlet and outlet air volumes are arranged along the length direction of the casing, cooling air is blown out from the air chambers, and reaches the upper surface of the air distribution plate from the bottom of the air distribution plate through the oblique vents, forming a fluidized bed that can support high-temperature solid particles in the upper conveying section of the conveyor, and recovering waste heat through heat exchange between the air flow and the high-temperature steel slag. The number of controllable air inlet chambers is arranged according to the length of the upper conveying distance that the controllable air inlet chambers can cover. Each row of air distribution plates is overlapped front and back, so that the conveyed material particles cannot fall into the air chamber below through the gap between the front and rear air distribution plates, and the number of rows of air distribution plates needs to match the number of rows of the conveyor chain. During the operation of the conveyor, cooling air is continuously blown into the upper surface of the air distribution plate from the bottom of the air distribution plate through the oblique air vents on the air distribution plate, forming a fluidized bed on the upper surface of the conveying process that can support high-temperature solid particles. The waste heat is recovered through heat exchange between the air flow and the high-temperature slag. The oblique air vents on the side walls of the air distribution plate adopt an oblique downward structure connected from the inside to the outside. This type of oblique air vents can not only meet the ventilation requirements during the operation of the slag conveyor, but also prevent fine particles from falling into the wind chamber below the air distribution plate through the oblique air vents.

[0009] The air-flow bed type slag cooling conveyor of the present invention, the air inlet control rotating arm and the air flow control rotating arm can be operated manually or electrically.

[0010] The entrained-bed type steel slag cooling conveyor of the present invention has a normally closed slag discharge control door which can be opened and closed manually or electrically controlled and is used to be opened to discharge slag under special circumstances.

[0011] The entrained bed type steel slag cooling conveyor of the present invention adopts an air distribution plate conveyor belt that can form an entrained bed and a controllable wind chamber structure that controls the air volume, so as to efficiently cool and convey high-temperature steel slag solids and recycle the high-temperature heat. It has a simple structure, reliable operation and a long service life.

[0012] In summary, the entrained bed type slag cooling conveyor of the present invention has simple structure, reliable operation, long service life, cooling and conveying, and high-temperature waste heat recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments thereof.

[0014] Figure 1 It is a schematic diagram of the structure of the present invention;

[0015] Figure 2 yes Figure 1 A-A section view in FIG.

[0016] Figure 3 yes Figure 1 The B-B section view in FIG.

[0017] Figure 4 yes Figure 1 The C-C section view in FIG.

[0018] Figure 5 yes Figure 3 A local enlarged view at position I in FIG.

[0019] Figure 6 yes Figure 1 Schematic diagram of roller guided load-bearing chain structure;

[0020] Figure 7 yes Figure 6 A top view of

[0021] Figure 8 yes Figure 6 Left view of . DETAILED DESCRIPTION

[0022] exist Figures 1 to 8The fluidized bed type slag cooling conveyor of the present invention comprises a sealed shell 1 with a slag discharge port a at the bottom of the left side and a material inlet b in the middle, a motor drive device 2 installed on the top surface of the left side of the shell, a driving sprocket 3 installed on the output shaft of the motor drive device, a drag shaft 4 installed on the left side of the shell, a driven sprocket 5 installed on the drag shaft and driving the drag shaft to rotate and driven by the driving sprocket through a chain transmission, a plurality of drag sprockets 6 with double-row teeth installed on the drag shaft and rotating with the drag shaft, a tensioning shaft 7 installed on the right side of the shell, a plurality of tensioning sprockets 8 installed on the tensioning shaft, a plurality of roller guide bearing chains 9 installed on the drag sprocket and the tensioning sprocket and driven by the drag sprocket, and a roller guide bearing chain 9 installed on the shell for roller guide bearing A chain-guided chain guide rail 10, a slag material conveyor belt 11 which is mounted on a roller-guided bearing chain and is composed of a plurality of arranged air plates with oblique air vents c, an air inlet duct 12 which is mounted on one side of the shell and takes in air along a flow direction d, an air inlet control shaft 13 mounted on the air inlet duct, an air inlet adjustment rotary door 14 which is located inside the air inlet duct and is mounted on the air inlet control shaft by fastening screws, an air inlet control rotary arm 15 mounted on the end of the air inlet control shaft, an air flow control rotary shaft 16 which is mounted on the air inlet duct, passes through the air inlet duct and extends into the interior of the air chamber e, an air flow adjustment rotary door 17 which is located inside the air chamber and mounted on the air flow control shaft, and an air flow control rotary arm 18 mounted on the end of the air flow control shaft.

[0023] The entrained bed type slag cooling conveyor of the present invention has 2 to 4 roller guide bearing chains 9, each of which is connected end to end and arranged in two layers in the shell, the upper layer is the conveying journey, and the lower layer is the return journey.

[0024] The fluidized bed type slag cooling conveyor of the present invention, the roller-guided load-bearing chain 9, includes a plurality of load-bearing chain links 9-1 provided with a male interlocking connection end g and a female interlocking connection end f, which are sequentially connected together through a pin shaft 9-5, a passive guide wheel 9-2 inserted into the female interlocking connection end and mounted on the pin shaft, active rollers 9-3 located on both sides of the load-bearing chain links and mounted on the pin shaft, and retaining rings 9-4 located on both sides of the active rollers and mounted on the pin shaft through a bayonet 9-6.

[0025] The entrained-bed steel slag cooling conveyor of the present invention further comprises a slag discharge pipe 19 installed on the other side of the shell body, and a normally closed slag discharge control door 20 installed on the slag discharge pipe.

[0026] The fluidized bed type slag cooling conveyor of the present invention is only described above as a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modify the technical contents disclosed above into equivalent embodiments with equivalent changes without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent replacement and improvement made to the above embodiments without departing from the content of the technical solution of the present invention, based on the technical essence of the present invention, within the spirit and principles of the present invention, still fall within the protection scope of the technical solution of the present invention.

Claims

1. An entrained-bed slag cooling conveyor, characterized in that: The invention comprises a sealed shell with a slag discharge port at the bottom of the left side, a material inlet in the middle, a motor drive device installed on the top surface of the left side of the shell, a driving sprocket installed on the output shaft of the motor drive device, a drag shaft installed on the left side of the shell, a driven sprocket installed on the drag shaft and driving the drag shaft to rotate and driven by the driving sprocket through a chain transmission, a plurality of drag sprockets with double rows of teeth installed on the drag shaft and rotating with the drag shaft, a tensioning shaft installed on the right side of the shell, a plurality of tensioning sprockets installed on the tensioning shaft, a plurality of roller guide bearing chains installed on the drag sprocket and the tensioning sprocket and driven by the drag sprocket, and a roller guide bearing chain installed on the shell for roller guide bearing chain guide A chain guide rail, a slag material conveyor belt which is mounted on a roller guide bearing chain and is composed of a plurality of air distribution plates with oblique air holes which are overlapped and connected in sequence, an air inlet duct which is mounted on one side of the shell and is arranged along the flow direction of the air inlet, an air inlet control shaft which is mounted on the air inlet duct, an air inlet adjustment rotary door which is located inside the air inlet duct and is mounted on the air inlet control shaft by fastening screws, an air inlet control rotary arm which is mounted on the end of the air inlet control shaft, an air flow control shaft which is mounted on the air inlet duct, passes through the air inlet duct and extends into the air chamber, an air flow adjustment rotary door which is located inside the air chamber and is mounted on the air flow control shaft, and an air flow control rotary arm which is mounted on the end of the air flow control shaft.

2. The entrained-bed type slag cooling conveyor according to claim 1, characterized in that: The roller guide bearing chains are 2 to 4 in number, each of which is connected end to end and arranged in two layers in the housing, the upper layer being the conveying course and the lower layer being the returning course.

3. The entrained-bed type slag cooling conveyor according to claim 1, characterized in that: The roller-guided load-bearing chain comprises a plurality of load-bearing chain links which are provided with male and female interlocking connecting ends and are sequentially connected together through pins, a passive guide wheel which is inserted into the female interlocking connecting end and mounted on the pin, active rollers which are located on both sides of the load-bearing chain links and mounted on the pin, and retaining rings which are located on both sides of the active roller and mounted on the pin through a bayonet.

4. The entrained-bed type slag cooling conveyor according to claim 1, characterized in that: It also includes a slag discharge pipe installed on the other side of the shell body, and a normally closed slag discharge control door installed on the slag discharge pipe.

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